Corvette L89 is one of Chevrolet's rarest and most exclusive models, with only 16 units ever made. Its sale for $1.7 million ...

"porcupine" head engine appeared in 1965, followed by the 427 ... Corvette owners, but also to a sampling of Car and Driver's nearly 400,000 readers, who voted it the Best All-Around Car of 1967 ...

In 1967, customers had three 427 ... spec engine. It ran on 103-octane racing fuel and produced over 500 horsepower. Both the L88 and L89 are the rarest road-legal iterations of the 1967 Corvette.